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Diffstat (limited to '3685/CH22/EX22.9/Ex22_9.sce')
| -rw-r--r-- | 3685/CH22/EX22.9/Ex22_9.sce | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/3685/CH22/EX22.9/Ex22_9.sce b/3685/CH22/EX22.9/Ex22_9.sce new file mode 100644 index 000000000..b09a2687b --- /dev/null +++ b/3685/CH22/EX22.9/Ex22_9.sce @@ -0,0 +1,12 @@ +clc
+// Given that
+f = 0.9 // Fraction of electrons leaving the cathode ray and reaching the anode without making any collision
+x = 20 // Distance between cathode ray tube and anode in cm
+sigma = 4.07e-19 // Collision cross section of molecules in m^2
+T = 2000 // Temperature in K
+printf("\n Example 22.9 \n")
+lambda = (x*0.01)/(log(1/f))
+n = 1/(sigma*lambda)
+p = n*(1.38e-23)*T
+printf("\n Pressure = %e N/m^2",p)
+// The answer given in the book contains round off error.
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